Safety attachment for automobile jacks



March 31, 1931. J. D. BUDDS SAFETY ATTACHMENT FOR AUTOMOBILE JACKS Filed Sept. 25, 1929 lla bazudgdjuvzuron ATTORNEY Patented Mar. 31, 1931 Hair-ensures JOSEPH an. nations, or REVERE, MAssAcHusEr'rs sen-nary nrracnmniv'r ro a h roMoBILn JAoxs A Application filed S tember 25, i529. Serial No. 395,128.

This invention relates toaccfesso ris' for automobiles i rinci ally in a the nature: of attachment For li tingjj acks, by means of which the wheels may be elevated upon grades without danger of the to ppling over or otherwisehecoining disengaged from the jack.

Another object of the invention contem plates the provision and arrangement of an attaching sleeve for the attachment to apply same upon the shafts of aeks.

An additional object of the invention coniprehends gripping members upon the sleeve to be brought into engagement with the axles and housings of avehicle.

More specifically stated the gripping members are provided with a locking member to retain same against displacement incident to the rolling tendency of the vehicle upon a grade.

lVith the above and other objects in view, the invention further consists of the following novel features and details of construe tion to be hereinafter more fully described,

illustrated in the accompanying drawing and pointed out in the appended claims.

In the drawing Figure 1 is an elevation of a jack with the present invention applied and illustrating by full and dotted lines the respective positions of the gripping elements.

Figure 2 is a side elevation of the gripping elements showing the hinge connection there between.

Figure 3 is a top plan view of the invention.

Figure is a horizontal sectional view taken on line 44 of Figure 1.

As previously mentioned, the present invention primarily resides in the provision and arrangement of an accessory permitting the attaching of the lifting screw of a jack for locking connection with the axles and housings of a vehicle. A locking connection, of this character, is especially desirous when it is necessary to jack up a wheel of a vehicle on a hill while changing tires or making repairs. Chocks, in the nature of stones, logs and etc., generally used by motorists to 0 keep the vehicle from creeping and riding ves the conventional formshof jacks, will slip gradually creep, due to thecompression" exercised by the formsof chocks against the pneumatictirestherefor. i v M I The forces of gravity also aid the ree-i ing teed-n of the vehicle againstthe jcliocfk 's and over the jack. The attachment will 'ngt "only prevent creeping but will also hold the vertical plahe with the axleor housing tngaged whereby the aforementioned base portion of the jack will notbe distortedjdiie to the characteristics ofthe ground.

Iii carrying out the invention, I provide anadaptor in the nature of a, sleevepdesigated by therefre'nce numeral 17 10, and which i clud'es ah adjusting or setscrew 11 horiontally disposed within the wall thereof for lit eer'ase e t w imme a 1 P- redufcedj ezitens'ion of the an; screw o1" 'rackhai shaft, in accordance with the type of'jack employed. The conventional or customary forms of saddle plates may be p refved in any desired manner and'tlie sleeve applied ih tlieinanner jshowninFigures land 2 of the drawings. 1 element, indicated as at 1 2,a nd arranged upon the upper portion ofthe adaptor sleeve l0,isiprovidedfwith ahinge member l3'jupon one sidethereof by means of whi chla complem n al. g pping, dem t a my, be w g unrest to occupy the full and dotted line pos tions illustrated inFigure 1 of the drawings. The lattermentiohedgripping element may .swingdforjappreciable distances outwardly' and'beyond the dotted line open position shown to facilitate accommodation of the axle or'hoii'sing ofthe'veliicle.

jaw, such asindicated at 1 5, having keys a gument "vertically disposed upongthe outer surfaces of the ends thereof are a slidably received within" key-ways or grooves 17 within the swingably ,Inountedgripping eleihent'jl i. A ma mas, carried and upstanding frointhe upper sideofthe body 15,

is prdjct'ed throughan opening in the top of the gripping element-1i and held in any desired re ulated adjusted position througl i the e nplbyiri'ent of an adjustingscrewltl having biting engagement therewith. The

ase portion of th'ejack constructionlih a stationary gripping inc jaw 15, after the manner of the stationary gripping element 12, is provided with a gripping or toothed face in order that those portions of the I-beams and differential housings engaged thereby will be held as a unitary structure therewith. After the swingably mounted gripping element 14: has been swung upon the hinge 13 to occupy the full lineposition illustrated in Figure 1 of the drawing, a locking element in the nature of aplate 20, hingedly mounted, as at 21, upon the upper v portion of the gripping element 14 and lying flush throughout the major portion of its length with the aligned surfaces of the stationary and gripping elements 12 and-14 'respectively in oppositely disposed relationto that of the hinge 13 terminates at its opposite end in a right angularly offset and apertured ear 22. Said ear is disposed immediately beneath the stationary gripping element 12'and a cap screw 23 is subsequently passed through the aperture therein for threaded engagement within a tapped opening in alignment with the aperture. The opening, as disclosed in dotted lines in Figure 1 of the drawing, is within the solid portion of th stationary gripping element 12.

After the locking element 20 has been secured in position, the locking screw 19 may then be released to lower the jaw 15 toward the upper side of axle or differential housthe tongue to lock the movable jaw in position for use.-

2. An attachment for lifting jacks comprising stationary and movable hingedly secured gripping elements, an adaptor sleeve arranged upon the stationary gripping element and receiving a portion of the jack, a jaw for. the movable gripping element slidably positioned therein, a tongue carried by said aw and projecting through a portion of the movable gripping element, an adjusting screw carried upon the movable gripping element having biting engagement with the tongue to lock the movable jaw in position for use, and a locking element swingably mounted upon the movable gripping element havin detachable locking connection'at its opposlte end with thefstationary gripping element to secure the attachment against accidental displacenient upon its work; 7

In testimony whereofI .affix my signature.

' JOSEPH D. BUDDS.

ing for bitingengagement therewith. As

housing is shown engaged by the teeth of the completed jaw face.

' The invention details of construction, and theright is hereinreserved to make such changes as properly fall within the scope of the appended claims. 1 V

' Having thus described the invention, What is claimed is V 1. An attachment for lifting jacks comprising stationary and movable hingedly secured gripping elements, an adaptor sleeve arranged upon the stationary gripping element and receiving a portion of the jack, a jaw for the movable gripping element slidably positioned therein a tongue carried by said jaw and projecting through a portion of the movable gripping elementyand an adjusting screw carried upon the movable gripping element having biting engagement with p is susceptible of various changes in 1ts form,proport1ons and minor 

